HOW to Install iOS 11 Beta 6 FREE! No Computer or Developer!! (Get iOS 11 NOW)
Step 1: On your iOS device,
Click here .skip ad .. scroll down click on download ios 11
Step 2: It will be redirected to ‘iOS Beta Software Profile’ Tap on Install three times and select the reboot option.
Step 3: After rebooted, Go to Settings -> General -> Software update
and the iOS 11 developer beta OTA should be available as a download on your device. After the OTA is downloaded, install it.
This update may contain some bugs and have stability issues.